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四、准弹性激光光散射的应用 4—1 平移扩散系数及粒子尺寸的测定目前,准弹性光散射(QLS)已被认为是测量高分子溶液和悬浮液中散射大分子或粒子平移扩散系数并确定其尺寸的一个有力工具。它比起传统的方法,如超速离心沉降法和色谱法有更多的优点,而且测量粒子尺寸的范围相当宽,一般可从几十个(?)至10000(?),测量过程十分快速,对散射强的样品溶液而言,仅需1—2分钟便能获得结果。因此,随着相关仪和微处理机的应用,QLS已变成
QUASI-RESISTANT LASER SCATTERING APPLICATIONS 4-1 Measurement of Pn and particle size At present, quasi-elastic light scattering (QLS) has been considered as a method to measure the diffusive diffusion coefficients of scattering macromolecules or particles in polymer solutions and suspensions A powerful tool to determine its size. It offers many advantages over traditional methods such as ultracentrifugation and chromatography, and the range of particle sizes is quite wide, typically from tens to 10,000, and the measurement is very fast, For strongly scattering sample solutions, results are obtained in just 1-2 minutes. As a result, QLS has become a reality with the use of correlators and microprocessors